Three-phase isolation transformer

The utility model relates to the technical field of transformers, and discloses a three-phase isolation transformer which comprises a protective shell and a base, a pressing plate is clamped to the top of the protective shell, a limiting plate is inserted into the bottom of the pressing plate, one side of the limiting plate is connected with the protective shell in a clamped mode, and a buffering mechanism is arranged below the pressing plate. The buffering mechanism comprises a buffering plate, a buffering elastic piece and an auxiliary strip, the bottom of the protection shell is supported through the top of the buffering elastic piece, the auxiliary strip can be driven to adjust the inclination angle when the second supporting strip moves, and therefore the buffering effect on the bottom of the protection shell is improved; buffer plates and telescopic rods can be used for carrying out buffer protection on the two sides of the protective shell, and then breakage of bolts is reduced; through upward movement